<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="description" >
        <title>手动练习</title>
        <style>
            .div{
                width: 100px;
                height: 10px;
                /* background-color: darkcyan; */
            }
        </style>
    </head>
    <body>
        <div class="div">div</div>
        <h1>h1</h1>
        <h2>h2</h2>
        <h3>h3</h3>
        <h4>h4</h4>
        <h5>h5</h5>
        <h6>h6</h6>
        <p>我是p</p>
        <strong>strong</strong>

        <i>我是i</i>
    </body>
</html>